1#!./perl -w
2
3# Regression tests for attributes.pm and the C< : attrs> syntax.
4
5BEGIN {
6    chdir 't' if -d 't';
7    @INC = '../lib';
8    require './test.pl';
9}
10
11plan 'no_plan';
12
13$SIG{__WARN__} = sub { die @_ };
14
15sub eval_ok ($;$) {
16    eval shift;
17    is( $@, '', @_);
18}
19
20eval_ok 'sub t1 ($) : locked { $_[0]++ }';
21eval_ok 'sub t2 : locked { $_[0]++ }';
22eval_ok 'sub t3 ($) : locked ;';
23eval_ok 'sub t4 : locked ;';
24our $anon1; eval_ok '$anon1 = sub ($) : locked:method { $_[0]++ }';
25our $anon2; eval_ok '$anon2 = sub : locked : method { $_[0]++ }';
26our $anon3; eval_ok '$anon3 = sub : method { $_[0]->[1] }';
27
28eval 'sub e1 ($) : plugh ;';
29like $@, qr/^Invalid CODE attributes?: ["']?plugh["']? at/;
30
31eval 'sub e2 ($) : plugh(0,0) xyzzy ;';
32like $@, qr/^Invalid CODE attributes: ["']?plugh\(0,0\)["']? /;
33
34eval 'sub e3 ($) : plugh(0,0 xyzzy ;';
35like $@, qr/Unterminated attribute parameter in attribute list at/;
36
37eval 'sub e4 ($) : plugh + xyzzy ;';
38like $@, qr/Invalid separator character '[+]' in attribute list at/;
39
40eval_ok 'my main $x : = 0;';
41eval_ok 'my $x : = 0;';
42eval_ok 'my $x ;';
43eval_ok 'my ($x) : = 0;';
44eval_ok 'my ($x) ;';
45eval_ok 'my ($x) : ;';
46eval_ok 'my ($x,$y) : = 0;';
47eval_ok 'my ($x,$y) ;';
48eval_ok 'my ($x,$y) : ;';
49
50eval 'my ($x,$y) : plugh;';
51like $@, qr/^Invalid SCALAR attribute: ["']?plugh["']? at/;
52
53# bug #16080
54eval '{my $x : plugh}';
55like $@, qr/^Invalid SCALAR attribute: ["']?plugh["']? at/;
56eval '{my ($x,$y) : plugh(})}';
57like $@, qr/^Invalid SCALAR attribute: ["']?plugh\(}\)["']? at/;
58
59# More syntax tests from the attributes manpage
60eval 'my $x : switch(10,foo(7,3))  :  expensive;';
61like $@, qr/^Invalid SCALAR attributes: ["']?switch\(10,foo\(7,3\)\) : expensive["']? at/;
62eval q/my $x : Ugly('\(") :Bad;/;
63like $@, qr/^Invalid SCALAR attributes: ["']?Ugly\('\\\("\) : Bad["']? at/;
64eval 'my $x : _5x5;';
65like $@, qr/^Invalid SCALAR attribute: ["']?_5x5["']? at/;
66eval 'my $x : locked method;';
67like $@, qr/^Invalid SCALAR attributes: ["']?locked : method["']? at/;
68eval 'my $x : switch(10,foo();';
69like $@, qr/^Unterminated attribute parameter in attribute list at/;
70eval q/my $x : Ugly('(');/;
71like $@, qr/^Unterminated attribute parameter in attribute list at/;
72eval 'my $x : 5x5;';
73like $@, qr/error/;
74eval 'my $x : Y2::north;';
75like $@, qr/Invalid separator character ':' in attribute list at/;
76
77sub A::MODIFY_SCALAR_ATTRIBUTES { return }
78eval 'my A $x : plugh;';
79like $@, qr/^SCALAR package attribute may clash with future reserved word: ["']?plugh["']? at/;
80
81eval 'my A $x : plugh plover;';
82like $@, qr/^SCALAR package attributes may clash with future reserved words: ["']?plugh["']? /;
83
84eval 'package Cat; my Cat @socks;';
85like $@, qr/^Can't declare class for non-scalar \@socks in "my"/;
86
87sub X::MODIFY_CODE_ATTRIBUTES { die "$_[0]" }
88sub X::foo { 1 }
89*Y::bar = \&X::foo;
90*Y::bar = \&X::foo;	# second time for -w
91eval 'package Z; sub Y::bar : foo';
92like $@, qr/^X at /;
93
94eval 'package Z; sub Y::baz : locked {}';
95my @attrs = eval 'attributes::get \&Y::baz';
96is "@attrs", "locked";
97
98@attrs = eval 'attributes::get $anon1';
99is "@attrs", "locked method";
100
101sub Z::DESTROY { }
102sub Z::FETCH_CODE_ATTRIBUTES { return 'Z' }
103my $thunk = eval 'bless +sub : method locked { 1 }, "Z"';
104is ref($thunk), "Z";
105
106@attrs = eval 'attributes::get $thunk';
107is "@attrs", "locked method Z";
108
109# Test attributes on predeclared subroutines:
110eval 'package A; sub PS : lvalue';
111@attrs = eval 'attributes::get \&A::PS';
112is "@attrs", "lvalue";
113
114# Test ability to modify existing sub's (or XSUB's) attributes.
115eval 'package A; sub X { $_[0] } sub X : lvalue';
116@attrs = eval 'attributes::get \&A::X';
117is "@attrs", "lvalue";
118
119# Above not with just 'pure' built-in attributes.
120sub Z::MODIFY_CODE_ATTRIBUTES { (); }
121eval 'package Z; sub L { $_[0] } sub L : Z lvalue';
122@attrs = eval 'attributes::get \&Z::L';
123is "@attrs", "lvalue Z";
124
125# Begin testing attributes that tie
126
127{
128    package Ttie;
129    sub DESTROY {}
130    sub TIESCALAR { my $x = $_[1]; bless \$x, $_[0]; }
131    sub FETCH { ${$_[0]} }
132    sub STORE {
133	::pass;
134	${$_[0]} = $_[1]*2;
135    }
136    package Tloop;
137    sub MODIFY_SCALAR_ATTRIBUTES { tie ${$_[1]}, 'Ttie', -1; (); }
138}
139
140eval_ok '
141    package Tloop;
142    for my $i (0..2) {
143	my $x : TieLoop = $i;
144	$x != $i*2 and ::is $x, $i*2;
145    }
146';
147
148# bug #15898
149eval 'our ${""} : foo = 1';
150like $@, qr/Can't declare scalar dereference in our/;
151eval 'my $$foo : bar = 1';
152like $@, qr/Can't declare scalar dereference in my/;
153
154
155my @code = qw(lvalue locked method);
156unshift @code, 'assertion' if $] >= 5.009;
157my @other = qw(shared unique);
158my %valid;
159$valid{CODE} = {map {$_ => 1} @code};
160$valid{SCALAR} = {map {$_ => 1} @other};
161$valid{ARRAY} = $valid{HASH} = $valid{SCALAR};
162
163our ($scalar, @array, %hash);
164foreach my $value (\&foo, \$scalar, \@array, \%hash) {
165    my $type = ref $value;
166    foreach my $negate ('', '-') {
167	foreach my $attr (@code, @other) {
168	    my $attribute = $negate . $attr;
169	    eval "use attributes __PACKAGE__, \$value, '$attribute'";
170	    if ($valid{$type}{$attr}) {
171		if ($attribute eq '-shared') {
172		    like $@, qr/^A variable may not be unshared/;
173		} else {
174		    is( $@, '', "$type attribute $attribute");
175		}
176	    } else {
177		like $@, qr/^Invalid $type attribute: $attribute/,
178		    "Bogus $type attribute $attribute should fail";
179	    }
180	}
181    }
182}
183